7320845 has 12 divisors (see below), whose sum is σ = 10219644. Its totient is φ = 5019840.

The previous prime is 7320827. The next prime is 7320853. The reversal of 7320845 is 5480237.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1623076 + 5697769 = 1274^2 + 2387^2 .

It is not a de Polignac number, because 7320845 - 2⁸ = 7320589 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14696 + ... + 15185.

It is an arithmetic number, because the mean of its divisors is an integer number (851637).

Almost surely, 2^7320845 is an apocalyptic number.

It is an amenable number.

7320845 is a deficient number, since it is larger than the sum of its proper divisors (2898799).

7320845 is a wasteful number, since it uses less digits than its factorization.

7320845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29900 (or 29893 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 7320845 is about 2705.7060076808. The cubic root of 7320845 is about 194.1722086584.

The spelling of 7320845 in words is "seven million, three hundred twenty thousand, eight hundred forty-five".